Perfect World? If you're one of the publisher's legion of players, then prepare to encounter Perfect World's latest initiative. It's called Arc, and it's a gaming platform that seeks to tie together PWE's account system, games, and news.
Similar to Steam, Origin, and other such digital distribution platforms, Arc will allow players to install and access games through a unified interface (assuming, of course, that the only games you're going to want to play are PWE's).
Arc uses players' current login information to access it and offers access to billing, support, friend messaging, and coupons. There's also a browser so you can check out the forums and whatnot, although if you really need a gaming platform to do that for you in 2013, one has to wonder how you're reading this in the first place.